No, it will work on power reserve, but it won't (logistically can't) work when you have literally run out.
This ought to be incredibly rare, but if you actually do literally run out of battery (not just it gets to the last few percent) then this technology doesn't work, whereas your bank cards do.
This ought to be incredibly rare, but if you actually do literally run out of battery (not just it gets to the last few percent) then this technology doesn't work, whereas your bank cards do.